Border frame for cushion seats



Sept. 17, 1929. 4 I FlNDURA. 1,728,235

BORDER FRAME FOR CUSHION SEATS Filed April 11, 1928 Jnuwnfow 3% NY? M iQ..7

Patented Sept. 17, 1929 UNITED STATES JOHN A. FINDURA, OF PITTSBURGH,

PENNSYLVANIA, ASSIGNOR T FORT PITT BEDDING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA BORDER FRAME FOR CUSHION SEATS Application filed April 11,

This invention relates to borderframes for cushion seats; and it comprises a lower'border frame for a cushion seat formed of metal and having an upper portion to provide a securing means for a cross bar, an intermediate offset portion, and lower portion reversed into the offset portion to provide a clamping or securing means for the cushion cover or fabric; all as more fully hereinafter set forth and as claimed.

Cushion seats comprise a lower border frame of rectangular shape between opposite sides of which are positioned cross-bars serving as foundations for coiled springs. The springs are secured to each other and to an upper frame adjacent their tops. This assembly forms a spring seat skeleton over which is placed padding and a fabric cover to complete the cushion seat. The fabric is drawn down around the sides of the seat and is secured at the lower frame. It is a problem in the art to provide a satisfactory securing means for the bottom edge of the fabric, and it is the purpose of the present invention to provide a bottom frame construction permitting of the satisfactory retention of the cover.

An embodiment of the invention is illustrated in the accompanying drawing, wherein: Fig. 1 is a fragmentary perspective View of the border frame and a cross bar together with a cover attached to the frame;

' Fig. 2 is a cross-sectional view of the assembly shown in Fig. 1; and,

Fig. 3 is an exploded fragmentary perspective view showing the several elements entering into the assembly.

The border frame, referred to enera'lly by the numeral 10, is formed of a t in piece of sheet metal which is bent to the desired cross sectional shape. The shape is then formed into a continuous rectangle by suitable bending and welding operations, and this rectangle provides the lower frame, between opposite sides of which extend cross bars 11, for supporting coiled springs. The cross bars are of a known construction, being of inverted U-shape in cross-section, and having flattened ends 12 for engaging the frame 10. The fabric or cover 13, which is drawn down 1928. Serial No. 269,161.

around the sides of the seat, is secured to the lower border frame 10.

According to the present invention, the

border frame 10 is provided with an inner downwardly depending flange 14 which is reversed on itself to provide an outer and upper web 15. This upper portion is approximately of inverted U-shape in cross-section. The web 15 is bent inwardly at approximately 21 right angle just below the lower extremity of the flange 14, and is then bent downwardly and again outwardly. These bends provide an intermediate offset portion 16, which includes an upper section 17, middle section 18, andlower section 19. The offset portion 16, viewed from the outside of the seat, may also be regarded as a longitudinally grooved portion 21. The lower section 19 is again bent downwardly to form a lower flange 22 which is reversed on itself to form an upwardly extending and lower exterior web 23 which lies approximately in the same plane as the upper outer web 15. The marginal portion of the strip forming the frame is then bent inwardly to form an inwardly projecting flange 24 which enters the groove 21 formed by the intermediate offset portion 16. In forming the frame, the inner flange 14 and the outer lower web 23 are not disposed in the positions shown in the drawing, but are bent outwardly, in order to permit of assembly with the cross bars 11' and the fabric 13. The cross bars are positioned between opposite sides of the frame, and the flanges 12 are disposed in the space between the flange 14 and the web 15. The flange 12 is of such breadth as to fit snugly against the metal at the bend between the flange 14 and web 15 and also to rest on the upper section 17. The under side of the cross bar 11 immediately adjacent the flange 12 is also supported on the section 17, and accordingly 1t will be seen that, when the flange 14 is pressed down into the position shown in the drawing, the cross bar is securely positioned and rigidly anchored.

The fabric 13 is crimped between the flange 22 and the lower web 23 and is also secured by the inwardly projecting flange 24. In assembling the fabric, the edges thereof are thrust into the opening between the flange 22 and web 23, and then the web 28 is pressed inwardly into the position shown in the drawing. lhis movement not only grips the fabric in the lower portion of the frame, but also causes the edge of the frame which enters the groove 21 to engage the fabric over a tortuous path. To overcome cutting or gouging of the fabric, the extreme edge of the frame adjacent the flange 24 should be rounded 0E slightly. Of course, in bending the frame into shape, the various corners between the flanges and websassume a rounded contour which does not cut the fabric.

What I claim is:

"a. A lower border frame for cushion seats having an ofiset portion including an inwardly projecting upper section, a middle section, and an outwardly extending lower section, said ofiset portion defining an exterior longitudinal groove, a downwardly projecting flange contiguous with the lower section an reversed on itself to form an outer web, the marginal portion of the web being turned inwardly to enter the exterior groove.

' 2. A lower border frame for cushion seats consisting of a metallic member having an inner downwardly projecting flange reversed on itself to form an upper outer web, the face contiguous with the outer web being bent inwardly, downwardly, and then outwardly, to form an intermediate oiiset portion, said oflset portion merging into a lower portion extending downwardly, then reversed upwardly to form a lower outer web, and again inwardly into said ofiset portion, the upper portion of said frame serving as a supporting means for a crossbar and the intermediate and lower portions serving as a receiving and securing means for a cover for the seat.

3. A cushion seat comprising a continuous lower border frame having cross bars secured between opposite sides thereof and a fabric cover extending downwardly t0 the lower border frame and secured thereto, said lower border frame consisting of a metal member having an upper portion, intermediate portion and lower portion, the upper portion being formed of inverted U-shape and adapted to receive the end of a cross bar, the intermediate portion having a bearing surface for the cross bar and an inwardly extending region to receive the fabric cover, the lower portion extending downwardly and being reversed on itself to form an outer web, the top or said outer web being turned to project into said inwardly extending region to engage and secure said fabric cover.

In testimony whereof, I have hereunto affixed my signature.

JOHN A. FINDURAL aaaaaee 

